CN220976739U - Energy-saving efficient rural domestic sewage treatment system - Google Patents
Energy-saving efficient rural domestic sewage treatment system Download PDFInfo
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- CN220976739U CN220976739U CN202322255093.XU CN202322255093U CN220976739U CN 220976739 U CN220976739 U CN 220976739U CN 202322255093 U CN202322255093 U CN 202322255093U CN 220976739 U CN220976739 U CN 220976739U
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- 239000010865 sewage Substances 0.000 title claims abstract description 56
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 63
- 238000004062 sedimentation Methods 0.000 claims abstract description 25
- 230000001105 regulatory effect Effects 0.000 claims abstract description 21
- 239000002131 composite material Substances 0.000 claims abstract description 19
- 238000001914 filtration Methods 0.000 claims abstract description 18
- 239000004576 sand Substances 0.000 claims abstract description 15
- 238000012856 packing Methods 0.000 claims abstract description 12
- 238000000926 separation method Methods 0.000 claims abstract description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 30
- 238000010992 reflux Methods 0.000 claims description 23
- 241000196324 Embryophyta Species 0.000 claims description 20
- 239000010802 sludge Substances 0.000 claims description 16
- 230000000813 microbial effect Effects 0.000 claims description 14
- 238000005273 aeration Methods 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 12
- 239000000945 filler Substances 0.000 claims description 11
- 239000002351 wastewater Substances 0.000 claims description 9
- 238000005192 partition Methods 0.000 claims description 7
- 239000004575 stone Substances 0.000 claims description 6
- 244000205574 Acorus calamus Species 0.000 claims description 4
- 235000011996 Calamus deerratus Nutrition 0.000 claims description 4
- 235000005273 Canna coccinea Nutrition 0.000 claims description 4
- 240000008555 Canna flaccida Species 0.000 claims description 4
- 235000014676 Phragmites communis Nutrition 0.000 claims description 4
- 235000015696 Portulacaria afra Nutrition 0.000 claims description 4
- 244000177175 Typha elephantina Species 0.000 claims description 4
- 235000018747 Typha elephantina Nutrition 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 2
- 239000012528 membrane Substances 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 14
- 230000008569 process Effects 0.000 description 10
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 7
- 244000005700 microbiome Species 0.000 description 7
- 229910052698 phosphorus Inorganic materials 0.000 description 7
- 239000011574 phosphorus Substances 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 238000000746 purification Methods 0.000 description 4
- 239000000725 suspension Substances 0.000 description 4
- 238000000354 decomposition reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- 239000003513 alkali Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 230000004060 metabolic process Effects 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 235000015097 nutrients Nutrition 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 241000565357 Fraxinus nigra Species 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- MMDJDBSEMBIJBB-UHFFFAOYSA-N [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] Chemical compound [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] MMDJDBSEMBIJBB-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000005276 aerator Methods 0.000 description 1
- 241001148470 aerobic bacillus Species 0.000 description 1
- 238000012271 agricultural production Methods 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 239000004746 geotextile Substances 0.000 description 1
- -1 gravel Substances 0.000 description 1
- 229920006262 high density polyethylene film Polymers 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002503 metabolic effect Effects 0.000 description 1
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 230000000241 respiratory effect Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Treatment Of Biological Wastes In General (AREA)
- Biological Treatment Of Waste Water (AREA)
Abstract
The utility model provides an energy-saving efficient rural domestic sewage treatment system which comprises a pretreatment system, an integrated box-type biochemical system and a composite ecological filtering wetland system, wherein the pretreatment system is connected with the integrated box-type biochemical system; the pretreatment system comprises an oil separation sand removal tank and an artificial grille, the integrated box-type biochemical system comprises a regulating tank, a biochemical tank, a sedimentation tank and a middle tank, the regulating tank, the biochemical tank, the sedimentation tank and the middle tank are sequentially connected, the composite ecological filtering wetland system comprises an impermeable layer, a combined packing layer and an aquatic plant area, and the impermeable layer, the combined packing layer and the aquatic plant area are sequentially arranged from bottom to top; one end of the regulating tank is provided with an equipment water inlet, one end of the middle water tank is provided with an equipment water outlet, one end of the equipment water inlet is connected with the pretreatment system, and a water outlet pipe is connected between the equipment water outlet and the composite ecological filtering wetland system. The utility model has the advantages of simple structure, buried placement, convenient installation, less electromechanical equipment, low operation cost and convenient maintenance and management.
Description
Technical Field
The utility model relates to the technical field of living sewage treatment, in particular to an energy-saving and efficient rural domestic sewage treatment system.
Background
At present, rural domestic sewage treatment facilities take the most part in urban treatment modes, black ash sewage is mixed into sewage treatment facilities for centralized treatment, and main treatment processes comprise biological treatment processes, natural ecological treatment processes and biological and artificial wetland combined treatment process technologies. The equipment such as a lift pump, a blast aerator and the like in the operation process of the traditional biological treatment system needs to be operated for a long time, so the electricity cost is high. The natural ecological treatment process has the problems of easy blockage of filter materials, short service cycle and low treatment efficiency, thereby causing 'building up and using up', finally forming idle facilities, and effectively treating sewage, so as to pollute the environment.
The whole volume structure of the sewage treatment equipment applied in the industry at present is larger, and meanwhile, compared with the treatment process and method required by the industrial sewage treatment agricultural production and living process, the sewage treatment equipment is not suitable for direct application and is unfavorable for directly converting the period into rural small-sized production sewage treatment, so that a novel mode for treating rural domestic sewage with low cost, ecological harmlessness, good treatment effect and simple operation and maintenance is developed.
Disclosure of utility model
In order to provide the energy-saving efficient ecological rural domestic sewage treatment equipment which has compact structure, small occupied area and simple operation.
The technical scheme of the utility model is as follows:
The energy-saving efficient rural domestic sewage treatment system comprises a pretreatment system, wherein the pretreatment system comprises an oil separation sand removal tank and an artificial grid, and the artificial grid is arranged at the front end of the oil separation sand removal tank to separate the oil separation sand removal tank into a space at the left side and a space at the right side;
The integrated box-type biochemical system comprises a regulating tank, a biochemical tank, a sedimentation tank and an intermediate water tank, wherein the regulating tank, the biochemical tank, the sedimentation tank and the intermediate water tank are sequentially connected, the upper ends of the regulating tank, the biochemical tank, the sedimentation tank and the intermediate water tank are all provided with an overhaul cover plate, the biochemical tank is provided with an air pipe interface, and the biochemical tank is filled with air through the air pipe interface;
The composite ecological filtering wetland system comprises an impermeable layer, a combined packing layer and an aquatic plant area, wherein the impermeable layer, the combined packing layer and the aquatic plant area are sequentially arranged from bottom to top;
The device comprises a pretreatment system, a water outlet pipe, a water inlet pipe, a water outlet pipe, a water inlet and a water outlet pipe, wherein the pretreatment system is connected with the water inlet pipe, the water outlet pipe is connected between the water outlet pipe and the pretreatment system, and the water outlet pipe is connected between the water outlet pipe and the pretreatment system.
Furthermore, the utility model discloses an energy-saving efficient rural domestic sewage treatment system, wherein the biochemical tank comprises an anoxic tank and an aerobic tank, the aerobic tank is provided with an air pipe interface, the air pipe interface is connected with a fan, and the fan is used for supplying air into the air pipe interface.
Furthermore, the energy-saving efficient rural domestic sewage treatment system is characterized in that a partition plate is arranged between the anoxic tank and the aerobic tank, an overflow weir is arranged in the middle of the partition plate for communication, and a filler, an aeration disc, an aeration pipe and a mixed liquid reflux pump are arranged in the aerobic tank and are used for refluxing the mixed liquid of the aerobic tank and the wastewater to the anoxic tank.
Furthermore, the energy-saving efficient rural domestic sewage treatment system is characterized in that a drain pipe is connected between the biochemical tank and the sedimentation tank, and the drain pipe is connected to the upper ends of the biochemical tank and the sedimentation tank and is horizontally arranged.
Furthermore, the energy-saving efficient rural domestic sewage treatment system is characterized in that a first lifting pump is arranged in the regulating tank and communicated with the anoxic tank, and a second lifting pump is arranged in the middle tank and connected with the water outlet of the equipment.
Furthermore, the utility model relates to an energy-saving and efficient rural domestic sewage treatment system, wherein the sedimentation tank is provided with a sludge reflux pump for refluxing sludge to the anoxic tank through a sludge reflux pipe.
Furthermore, the utility model relates to an energy-saving and efficient rural domestic sewage treatment system, wherein the impermeable layer consists of an HDPF film and a geomembrane.
Furthermore, the lower layer of the combined packing layer sequentially consists of gravels, gravel, activated carbon and microbial ceramsite along the upper layer, and the gravels, the gravel, the activated carbon and the microbial ceramsite are sequentially stacked from bottom to top.
Furthermore, the utility model relates to an energy-saving and efficient rural domestic sewage treatment system, wherein the stacking thickness ratio of broken stone, gravel, activated carbon and microbial ceramsite is as follows: 18-22% of broken stone, 18-22% of gravel, 28-32% of activated carbon and 38-42% of microbial ceramsite.
Furthermore, the energy-saving efficient rural domestic sewage treatment system provided by the utility model has the advantages that one or more plants of canna, calamus, elephant grass and reed can be planted in the aquatic plant area.
The utility model has the beneficial effects that:
1. The utility model has the advantages of simple structure, buried placement, convenient installation, less electromechanical equipment, low operation cost and convenient maintenance and management.
2. The utility model is internally provided with the regulating tank with the oil separation and sand removal functions, which is beneficial to the accumulation of sewage before treatment, forms stable flow and has strong impact load resistance.
3. The utility model adopts an A/O (anaerobic/aerobic) process, can remove organic matters, total phosphorus, total nitrogen and other pollutants, utilizes the continuous metabolism, decomposition and regeneration capacity of microorganisms, only needs aeration and control of reflux ratio, reduces secondary pollution, and is the most ecological and environment-friendly treatment method.
4. The composite ecological filtering wetland system can carry out secondary advanced treatment and purification on sewage, and uses the triple coordination of physics, chemistry and biology in matrix-microorganism-plant to carry out anaerobic biochemical and filtering physical treatment, thereby further improving the sewage treatment efficiency. The ecological system can be improved by constructing stronger wetland landscape plants, habitat is provided for wild animals, wetland ecological restoration is realized, and rural ecological environment is beautified.
Drawings
FIG. 1 is a schematic diagram of a system for treating rural domestic sewage with energy conservation and high efficiency;
FIG. 2 is a schematic diagram of an integrated tank-type biochemical system of the energy-saving and efficient rural domestic sewage treatment system;
FIG. 3 is a schematic diagram of a longitudinal side of a composite ecological filter wetland system of the energy-saving and efficient rural domestic sewage treatment system;
Name and number in the figure: 1. a pretreatment system; 2. an integrated box-type biochemical system; 3. a composite ecological filtering wetland system; 101. an artificial grille; 201. an adjusting tank; 202. an anoxic tank; 203. an aerobic tank; 204. a sedimentation tank; 205. a middle pool; 206. a blower; 207. an access panel; 208. a device water inlet; 209. an air pipe interface; 210. a first lift pump; 211. a second lift pump; 212. a drain pipe; 213. a water outlet pipe; 301. an impermeable layer; 302. combining the filler layers; 303. and (3) an aquatic plant area.
Detailed Description
In order to enable those skilled in the art to better understand the technical scheme of the present utility model, the present utility model is described in detail below with reference to the accompanying drawings.
As shown in fig. 1 to 3, the utility model provides an energy-saving and efficient rural domestic sewage treatment system, which comprises three main components, namely a pretreatment system 1, an integrated box-type biochemical system 2 and a composite ecological filtering wetland system 3, wherein the pretreatment system 1 comprises an oil separation sand removal tank and an artificial grid 101, and the artificial grid 101 is arranged at the front end of the oil separation sand removal tank; the artificial grille 101 separates the oil removal sand pool into a space on the left side and a space on the right side; the integrated box-type biochemical system 2 comprises an adjusting tank 201, a biochemical tank, a sedimentation tank 204 and an intermediate water tank, wherein the adjusting tank 201, the biochemical tank, the sedimentation tank 204 and the intermediate water tank are sequentially connected, an overhaul cover plate 207 is arranged at the upper ends of the adjusting tank 201, the biochemical tank, the sedimentation tank 204 and the intermediate water tank, an air pipe interface 209 is arranged in the biochemical tank, and air is filled into the biochemical tank through the air pipe interface 209; the composite ecological filtering wetland system 3 comprises an impermeable layer 301, a combined packing layer 302 and an aquatic plant area 303, wherein the impermeable layer 301, the combined packing layer 302 and the aquatic plant area 303 are sequentially arranged from bottom to top; an equipment water inlet 208 is formed in one end of the adjusting tank 201, an equipment water outlet is formed in one end of the middle water tank 205, one end of the equipment water inlet 208 is connected with the pretreatment system 1, and a water outlet pipe 213 is connected between the equipment water outlet and the composite ecological filtering wetland system 3.
As shown in fig. 1 to 3, further, the biochemical tank includes an anoxic tank 202 and an aerobic tank 203, the aerobic tank 203 is provided with an air duct interface 209, the air duct interface 209 is connected with a fan 206, and the fan 206 is used for supplying air into the air duct interface 209. A partition plate is arranged between the anoxic tank 202 and the aerobic tank 203 to separate, an overflow weir is arranged in the middle of the partition plate to communicate with the anoxic tank, and a filler, an aeration disc, an aeration pipe and a mixed liquid reflux pump are arranged in the aerobic tank 203 and are used for refluxing the mixed liquid of the aerobic tank 203 and the wastewater to the anoxic tank 202. A drain pipe 212 is connected between the biochemical tank and the sedimentation tank 204, and the drain pipe 212 is connected to the upper ends of the biochemical tank and the sedimentation tank 204 and is horizontally arranged. The regulating tank 201 is internally provided with a first lifting pump 210 which is communicated with the anoxic tank 202, and the middle water tank is internally provided with a second lifting pump 211 which is connected with a water outlet of the equipment. Further, the sedimentation tank 204 is provided with a sludge reflux pump for refluxing sludge to the anoxic tank 202 through a sludge reflux pipe.
As shown in fig. 1 to 3, further, the energy-saving and efficient rural domestic sewage treatment system is provided, and the impermeable layer 301 is formed by paving an HDPF film and a geomembrane in sequence. The lower layer of the combined packing layer 302 is sequentially composed of gravels, gravel, activated carbon and microbial ceramsite along the upper layer, and the gravels, the gravel, the activated carbon and the microbial ceramsite are sequentially stacked along the lower layer to the upper layer. In a preferred embodiment, the ratio of the stacking thickness of the crushed stone, the gravel, the activated carbon and the microbial ceramsite is as follows: the thickness proportion of broken stone is 18-22%, the thickness proportion of gravel is 18-22%, the thickness proportion of activated carbon is 28-32%, and the thickness proportion of microbial haydite is 38-42%, wherein the thickness of the integral combined filler layer 302 is about 1.1 m, and the effect is better. Further, in the energy-saving and efficient rural domestic sewage treatment system, the aquatic plant area 303 can be used for planting one or more plants of canna, calamus, elephant grass and reed for grouping and planting.
The utility model relates to an energy-saving efficient rural domestic sewage treatment system, which comprises a pretreatment system 1, an adjusting tank 201, a biochemical tank, namely an anoxic tank 202, an aerobic tank 203, a sedimentation tank 204, a middle water tank and a composite ecological filtering wetland system 3 in sequence. The outer side wall of the oil separation and sand removal tank of the pretreatment system 1 is provided with a water inlet, external sewage enters the sewage through the water inlet, oil floats on the surface of the sewage due to lower density, gravel falls on the bottom of the tank through precipitation, the sewage flows into the regulating tank 201 from the water outlet on the other side, water quantity and water quality are regulated in the tank and then are lifted to a biochemical tank, namely an anoxic tank 202 and an aerobic tank 203 through a first lifting pump 210, COD, BOD, ammonia nitrogen and suspended solids are treated through blast aeration by utilizing the metabolic decomposition of facultative bacteria, aerobic bacteria and other strains, the sewage enters the settling tank 204 to remove SS, namely suspended solids, the sewage is lifted to the composite ecological filtering wetland system 3 through a second lifting pump 211 of the middle tank to be purified efficiently, and the sewage can reach the standard after being purified, be discharged after reaching the second standard of the national sewage discharge standard of rural domestic sewage treatment facility.
By means of spontaneous respiratory decomposition of the matrix filler and the triple coordination of physics, chemistry and biology in the matrix-microorganism-plant, efficient purification of sewage is achieved, and the sewage can reach the discharge standard after purification. The system can automatically control the water distribution of the water pump, does not need manual operation in daily life, and can realize 24-hour full-automatic operation. Meanwhile, the pretreatment system 1 comprises a grating and an oil separation and sand removal tank; the grid is arranged at the front end of the oil removal sand pool; the oil removal sand removal pond is connected with the adjusting pond 201 through a pipeline.
The regulating tank 201 is internally provided with a lift pump, a liquid level alarm and an overhaul cover 207 at the top; the regulating tank 201 is communicated with the anoxic tank 202 through a lift pump. The anoxic tank 202 is separated from the aerobic tank 203 by a partition plate, the middle is communicated with a water overflow weir, and the aerobic tank 203 is internally provided with a filler, an aeration disc, an aeration pipe, a mixed liquid reflux pump, a blower 206 and an automatic control system. The mixed liquor reflux pump is used for refluxing the mixed liquor of the aerobic tank 203 and the wastewater to the anoxic tank 202. The sedimentation tank 204 is matched with a sludge reflux pump for refluxing sludge to the anoxic tank 202 through a sludge reflux pipe, and is provided with inclined plate packing. The middle water tank 205 is provided with a lift pump; a lifting pump is arranged between the intermediate water tank 205 and the composite ecological filtering wetland system 3.
The composite ecological filtering wetland system 3 is composed of an HDPF membrane, a geomembrane, a combined filler such as gravels, gravel, plants, microorganism ceramsite, activated carbon and the like. The barrier layer 301 comprises, in order from bottom to top, a 1.0mm thick HDPE film or geotextile, a 1.1m high composite filler layer such as gravel 20cm thick, activated carbon 30cm thick, microbial ceramsite 40cm thick, etc., and an aquatic plant area 303 of 1.0m thick soil. The aquatic plant area 303 may be planted with canna, calamus, elephant grass, reed, etc.
The working principle and the using method of the embodiment of the utility model are as follows:
Step one, rural domestic sewage firstly passes through a grating oil removal sand removal tank to remove larger particle impurities and garbage to deposit and intercept in the area.
Step two, the waste water passing through the grating flows into the regulating tank 201, and liquid alkali and nutrient salt can be added into the regulating tank 201 through a liquid alkali adding device and a nutrient salt adding device, so that the effects of balancing water quantity, balancing water quality and balancing water quality are achieved for the waste water.
Step three, the regulating tank 201 is pumped to a biochemical tank (anoxic-aerobic tank 203) through a lifting pump, COD is removed through aeration and microorganism metabolism, uninterrupted aeration is carried out in the process unit, the concentration of dissolved oxygen is high, sufficient aerobic environment is provided for the nitrification of microorganisms, NH3-N is partially purified in the area, the concentration of mixed liquid phosphorus in an aerobic or anoxic section is greatly reduced by utilizing the characteristics of anaerobic phosphorus release and aerobic (or anoxic) phosphorus absorption of phosphorus accumulating microorganisms, and finally the phosphorus is removed through sludge discharge, so that the purification of water quality is realized. The blower 206 is automatically started and stopped according to the concentration of the dissolved oxygen in the water, so that the purpose of energy saving is achieved.
And step four, the wastewater after biochemical treatment enters a sedimentation tank 204 for mud-water separation, SS in the water is further removed, and the effluent is ensured to be discharged up to the standard. The produced sludge is returned to the anoxic tank 202, the excess sludge is discharged to the sludge tank, and is periodically pumped out for external transport and landfill for safe disposal.
Step five, the wastewater settled by the sedimentation tank 204 enters an intermediate water tank to be lifted to a composite ecological filtering wetland system 3, and a certain amount of COD is removed through the actions of matrix interception, microbial degradation, wetland plant fixation and the like; the nitrogen element can be removed by the modes of adsorption of filler particles, volatilization of the gas NH3 converted by the filler particles, conversion of nitrate nitrogen by nitrification of microorganisms, plant uptake in the wetland and the like; the phosphorus is removed mainly by the adsorption of matrixes (gravels, gravel, plants, microorganism ceramsite, activated carbon and the like) in a wetland system, and mainly by the adsorption of soluble phosphate in wastewater; while smaller particle suspensions (SS) are removed by biochemistry and entrapment. Finally, the quality of the discharged water is ensured to reach the discharge standard.
The principles and embodiments of the present utility model have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present utility model and its core ideas. The foregoing is merely a preferred embodiment of the utility model, and it should be noted that, due to the limited text expressions, there is objectively no limit to the specific structure, and that, for a person skilled in the art, modifications, adaptations or variations may be made without departing from the principles of the present utility model, and the above technical features may be combined in any suitable manner; such modifications, variations and combinations, or the direct application of the inventive concepts and aspects to other applications without modification, are contemplated as falling within the scope of the present utility model.
Claims (10)
1. An energy-saving efficient rural domestic sewage treatment system, which is characterized by comprising:
The pretreatment system (1), wherein the pretreatment system (1) comprises an oil separation sand removal tank and an artificial grid (101), and the artificial grid (101) is arranged at the front end of the oil separation sand removal tank;
The integrated box-type biochemical system (2), the integrated box-type biochemical system (2) comprises a regulating tank (201), a biochemical tank, a sedimentation tank (204) and an intermediate water tank, wherein the regulating tank (201), the biochemical tank, the sedimentation tank (204) and the intermediate water tank are sequentially connected, the upper ends of the regulating tank (201), the biochemical tank, the sedimentation tank (204) and the intermediate water tank are all provided with an overhaul cover plate (207), the biochemical tank is provided with an air pipe interface (209), and the biochemical tank is filled with air through the air pipe interface (209);
The composite ecological filtering wetland system (3), wherein the composite ecological filtering wetland system (3) comprises an impermeable layer (301), a combined packing layer (302) and an aquatic plant area (303), and the impermeable layer (301), the combined packing layer (302) and the aquatic plant area (303) are sequentially arranged from bottom to top;
One end of the regulating tank (201) is provided with an equipment water inlet (208), one end of the middle water tank (205) is provided with an equipment water outlet, one end of the equipment water inlet (208) is connected with the pretreatment system (1), and a water outlet pipe (213) is connected between the equipment water outlet and the composite ecological filtering wetland system (3).
2. The energy-saving efficient rural domestic sewage treatment system according to claim 1, wherein the biochemical tank comprises an anoxic tank (202) and an aerobic tank (203), the aerobic tank (203) is provided with an air pipe interface (209), the air pipe interface (209) is connected with a fan (206), and the fan (206) is used for supplying air into the air pipe interface (209).
3. The energy-saving and efficient rural domestic sewage treatment system according to claim 2, wherein a partition plate is arranged between the anoxic tank (202) and the aerobic tank (203), an overflow weir is arranged in the middle of the partition plate for communication, a filler, an aeration disc, an aeration pipe and a mixed liquid reflux pump are arranged in the aerobic tank (203), and the mixed liquid reflux pump is used for refluxing mixed liquid of the aerobic tank (203) and wastewater to the anoxic tank (202).
4. The energy-saving and efficient rural domestic sewage treatment system according to claim 1, wherein a drain pipe (212) is connected between the biochemical tank and the sedimentation tank (204), and the drain pipe (212) is connected to the upper ends of the biochemical tank and the sedimentation tank (204) and is horizontally arranged.
5. The energy-saving and efficient rural domestic sewage treatment system according to claim 1, wherein the regulating tank (201) is internally provided with a first lifting pump (210) which is communicated with the anoxic tank (202), and the middle tank is internally provided with a second lifting pump (211) which is connected with a water outlet of the equipment.
6. The energy-saving and efficient rural domestic sewage treatment system according to claim 1, wherein the sedimentation tank (204) is provided with a sludge reflux pump for refluxing sludge to the anoxic tank (202) through a sludge reflux pipe.
7. An energy efficient rural domestic sewage treatment system according to claim 1, wherein the impermeable layer (301) is comprised of an HDPF membrane and a geomembrane.
8. The energy-saving and efficient rural domestic sewage treatment system according to claim 1, wherein the lower layer of the combined packing layer (302) sequentially consists of gravels, gravel, activated carbon and microbial ceramsites along the upper layer, and the gravels, the gravel, the activated carbon and the microbial ceramsites are sequentially stacked from bottom to top.
9. The energy-saving and efficient rural domestic sewage treatment system according to claim 8, wherein the stacking thickness ratio of the broken stone, the gravel, the activated carbon and the microbial ceramsite is as follows: 18-22% of broken stone, 18-22% of gravel, 28-32% of activated carbon and 38-42% of microbial ceramsite.
10. The energy-saving efficient rural domestic sewage treatment system according to claim 1, wherein the aquatic plant area (303) can be planted with one or more plants of canna, calamus, elephant grass and reed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322255093.XU CN220976739U (en) | 2023-08-22 | 2023-08-22 | Energy-saving efficient rural domestic sewage treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322255093.XU CN220976739U (en) | 2023-08-22 | 2023-08-22 | Energy-saving efficient rural domestic sewage treatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220976739U true CN220976739U (en) | 2024-05-17 |
Family
ID=91062846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322255093.XU Active CN220976739U (en) | 2023-08-22 | 2023-08-22 | Energy-saving efficient rural domestic sewage treatment system |
Country Status (1)
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2023
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